set_property IOSTANDARD LVCMOS18 [get_ports {led_4bts[3]}]
set_property IOSTANDARD LVCMOS18 [get_ports {led_4bts[2]}]
set_property IOSTANDARD LVCMOS18 [get_ports {led_4bts[1]}]
set_property IOSTANDARD LVCMOS18 [get_ports {led_4bts[0]}]
set_property PACKAGE_PIN A7 [get_ports {led_4bts[3]}]
set_property PACKAGE_PIN B8 [get_ports {led_4bts[2]}]
set_property PACKAGE_PIN A6 [get_ports {led_4bts[1]}]
set_property PACKAGE_PIN B5 [get_ports {led_4bts[0]}]
